For the first time, mobile publishers can quickly assess the demographic profile of their users, compare it to those of their competitors’ apps, and easily make accurate data-driven decisions about who to target in acquisition campaigns.

Only 16 percent of U.S. adults use Twitter, and only half of them get news via the short-message social network, according to a new survey by Pew Research Center. That’s far fewer than Facebook, where 30 percent of American adults get their news.

Reddit, the self-styled “front page of the internet” that has can send floods of traffic to unsuspecting sites and has luminaries like President Obama visiting to answer questions directly from the great unwashed, is only visited by six percent of online American adults, according to the Pew Research Center.

Forrester released a new report today on mobile marketing. As it turns out, there’s only one group of mobile customers that marketers want to target. Big shocker: It’s not the 7 percent of American adults who still refuse to use a mobile phone.

Sure, Facebook is the world’s largest social network — and the one currently ranked highest by teens. But don’t count the little blue bird out yet: Twitter just might be winning the youth numbers game.

While only 4 percent of US online adults have ever used a location-based service, like popular check in app Foursquare, data from research firm Forrester shows that young adult males with college degrees appear to be the main user group.